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Finding the Fourth Proportional to 8,680.41, 11,978.94 and 4,701.51

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Solution

The fourth proportional to 8,680.41, 11,978.94 and 4,701.51 is: 6,488.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.41 : 11,978.94 = 4,701.51 : x
  2. Step 2: Convert to fraction form
    8,680.41/11,978.94 = 4,701.51/x
  3. Step 3: Cross multiply
    8,680.41x = 11,978.94 × 4,701.51
  4. Step 4: Simplify right side
    8,680.41x = 56,319,106.20
  5. Step 5: Solve for x
    x = 56,319,106.20/8,680.41
  6. Step 6: Final answer
    x = 6,488.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.